roachtest: cluster_creation failed

roachtest.cluster_creation [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAzureBazel/20652610?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAzureBazel/20652610?buildTab=artifacts#/kv95/enc=false/nodes=3/cpu=32/size=64kb/splt=100) on master @ [cdcf76d0af53d78418ed10585fca7987c1c0aedc](https://github.com/cockroachdb/cockroach/commits/cdcf76d0af53d78418ed10585fca7987c1c0aedc):

```
test kv95/enc=false/nodes=3/cpu=32/size=64kb/splt=100 failed: (test_runner.go:990).func4: in provider: azure: unable to authenticate; please use ``az login`` or double check environment variables [owner=test-eng]
```

Parameters:
- cloud=azure
- coverageBuild=false
- cpu=32
- runtimeAssertionsBuild=false
- ssd=0
Help

See: [roachtest README](https://github.com/cockroachdb/cockroach/blob/master/pkg/cmd/roachtest/README.md)

See: [How To Investigate \(internal\)](https://cockroachlabs.atlassian.net/l/c/SSSBr8c7)

/cc @cockroachdb/test-eng

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Jira issue: CRDB-55853